Today, Donald J Trump will take the oath of office as the 47th President of the US, marking the beginning of his second term. This moment represents a significant chapter in American politics, underscoring the enduring resilience of democratic institutions in the face of intense polarisation.Trump’s return to the presidency comes at a time of deep political divisions, but the peaceful transition of power — long a hallmark of American democracy — stands as a reaffirmation of the US commitment to constitutional governance. Despite a contentious political landscape, his second term inauguration will symbolise the unity of process, even in times of stark ideological differences.The peaceful transfer of power reminds the world of the strength of US institutions, even amid discord. Trump’s inauguration serves as a reminder that democratic systems, while imperfect, endure through the adherence to shared principles. As his presidency begins anew, the coming years will test the ability of the US to navigate challenges while striving for unity and progress within.In his first inaugural address, Trump reiterated promises to prioritise “America First” policies, economic revitalisation, and a focus on national sovereignty. His second term presents an opportunity to address unfinished policy agendas while grappling with pressing global challenges, including Russia-Ukraine war, Israeli continued aggression in the Middle East, Iran nuclear deal, China’s economic prowess, water scarcity and climate change...to name a few.Iran’s nuclear ambitionsIran and its nuclear programme containment present one of the many complex foreign policy challenges the Trump Administration will face. US foreign policy toward Iran under Trump’s leadership may very well indicate the challenges and complexities of addressing Iran’s nuclear ambitions, ballistic missile programmes, and regional influence. The “maximum pressure” strategy, aimed to coerce Iran into curbing its nuclear activities while limiting support for regional proxies, inflicted significant economic harm but fell short of achieving its primary objectives. Iran not only continued but intensified its nuclear activities and maintained support for its regional militias, exposing the limitations of economic sanctions when not paired with comprehensive diplomatic efforts or alternative strategies addressing security concerns.Significant regional developments have weakened Iran’s strategic position. The diminishing influence of Iranian proxies and vulnerabilities exposed by Israeli military actions create potential leverage for renewed negotiations. However, these opportunities are time-sensitive, particularly given Iran’s advanced uranium enrichment capabilities. With the potential to achieve nuclear weaponisation within weeks, urgent and multifaceted policy measures are necessary to mitigate the risk.China and Russia play pivotal roles in complicating US efforts to isolate Iran. Their economic and political support for Tehran significantly bolsters its resistance to sanctions. The dynamic underscores the importance of adopting a multilateral approach that addresses the strategic interests of Beijing and Moscow while diplomatically isolating Iran.Military action remains a contentious option for addressing Iran’s nuclear advancements. While the approach could serve as a last resort to prevent Tehran from crossing the nuclear threshold, the risks of regional destabilisation are considerable. This precarious balance between coercive measures and the pursuit of peaceful solutions illustrates the need for calculated and strategic decision-making. Navigating the complexities of US-Iran relations requires a cohesive approach that integrates economic, diplomatic, and strategic tools. Combining these measures with a clear vision of desired outcomes is essential to address Iran’s nuclear ambitions while promoting US hegemonic stability in the Middle EastNotwithstanding, internal divisions within the Trump Administration may emerge as a significant obstacle to policy coherence. The ideological diversity among hardliners and “America First” advocates complicated the formation of unified objectives and strategies. These internal disagreements risk stalling diplomatic progress and underscore the importance of aligning strategic goals to achieve effective foreign policy outcomes.Maximum pressure strategy in UkraineAlina Polyakova, writing in Foreign Affairs, contends that President Trump must first intensify pressure on Russia if he hopes to negotiate a viable deal with President Putin over Ukraine. She argues: “Trump has said that he aims to pursue a deal with Putin, and he is right to want to bring a lasting and sustainable peace to a war that has cost hundreds of thousands of lives and destabilised geopolitics around the globe.”I do underline that the protracted conflict in Ukraine necessitates a recalibration of US strategies to accelerate a resolution and uphold the principles of sovereignty and territorial integrity. The approach of maximum pressure strategy does offer a compelling framework to achieve these objectives. While the Biden Administration has demonstrated steadfast support for Ukraine, its cautious approach fell short of the decisive action required to force meaningful negotiations with Moscow. Inherited the Russia-Ukraine war, it is imperative for Trump’s foreign policy approach to be of a maximum pressure strategy to alter the Kremlin’s calculus and bring an end to the conflict.Although economic sanctions remain a cornerstone of international pressure campaigns, current measures targeting Russian financial institutions and key industries have constrained Moscow’s economic manoeuvrability but lack the comprehensiveness needed for maximum impact. Expanding sanctions to encompass all Russian banks and implementing secondary sanctions on entities that enable Russia’s evasion tactics, particularly in collaboration with China, would deepen the economic toll. The Trump Administration should aim to target Russia’s lucrative energy exports by imposing sanctions on its oil providers and promoting alternative energy sources for European allies would further erode its war-financing capabilities.Equally critical is the provision of advanced military aid to Ukraine. The West’s incremental approach to supplying defensive and offensive capabilities has allowed Ukraine to hold its ground, but more robust support is needed to shift the balance on the battlefield decisively. Providing long-range missile systems, such as ATACMS and HIMARS, alongside sophisticated air defence systems like Patriot interceptors, would bolster Ukraine’s ability to defend its sovereignty and potentially reclaim occupied territories. Simultaneously, the Trump Administration needs to be pressing European allies to contribute comparable military resources would reinforce a unified front against Russian aggression.Israel-Hamas ceasefireTom O’Connor of Newsweek highlights the significant international challenges awaiting Trump as he takes office, listing the Israel-Gaza and Russia-Ukraine conflicts among the most pressing. O’Connor emphasises that “given the potential for some of the most volatile of these ongoing conflicts to directly impact US interests at a time when the nation is engaged in a global great power competition with rivals such as China and Russia, the stakes are high in the second Trump administration’s efforts to revamp foreign policy in order to ‘Make America Great Again’ on the world stage.”Mediated by Qatar, Egypt and the US, the Israel-Hamas ceasefire represents a pivotal moment in the ongoing Middle Eastern conflict, but it is also a harbinger of broader geopolitical shifts, particularly with the anticipated influence of Trump’s future foreign policy agenda. The ceasefire, which temporarily halts the violence that has devastated Gaza and Israel, sets the stage for a redefined US foreign policy approach in the region. The Trump Administration’s strategy will likely build on past policy directions, emphasising unwavering support for Israel, confronting Iran, and consolidating alliances across the Middle East, with significant implications for both the ceasefire’s longevity and the broader regional balance of power.In Israel, the ceasefire serves as an immediate tactical and diplomatic necessity, with Prime Minister Netanyahu facing internal opposition to any deal that does not fully dismantle Hamas. His government, however, is acutely aware of the Trump Administration’s likely role in shaping Israeli policy in the months and years ahead. As highlighted by political analysts in the Atlantic Council, the so-called “Trump effect” has already exerted substantial pressure on Israel to conclude a ceasefire before his inauguration, with the promise of strong US support in confronting Iran, advancing Israeli settlement activities in the West Bank, and pushing back against any perceived political concessions to Palestinians. The Trump Administration’s consistent stance of supporting Israel on key security issues and its approach to strengthening ties with Saudi Arabia will further cement the US-Israel relationship, but it will also introduce significant challenges.In the broader regional context, the Trump Administration is poised to consolidate alliances with key Arab states, including Saudi Arabia and the UAE, both of which have tacitly aligned with Israel on shared security concerns, particularly regarding Iran. The potential for greater normalisation of ties between Israel and these Arab states, as witnessed in the Abraham Accords during Trump’s first term, could further complicate the broader regional dynamics, as the Palestinian issue becomes increasingly sidelined in favour of geopolitical and security interests. This shift could influence the effectiveness of any ceasefire ongoing or future ones, as regional actors might be less inclined to push for a comprehensive peace agreement that prioritises Palestinian statehood over security concerns.The future of the Israel-Hamas ceasefire will be shaped by these intersecting forces. While the ceasefire offers a temporary halt to hostilities, the challenge will be to translate it into a durable peace process — something that remains elusive in the region. The Trump Administration’s foreign policy, which prioritises Israeli security, countering Iranian influence, and bolstering alliances with Arab states, will continue to shape the contours of the conflict. However, the region’s deep-rooted tensions and competing interests make the prospect of a lasting peace uncertain, and I underline that the Trump Administration’s ability to navigate these challenges will determine whether the ceasefire serves as a prelude to a more stable regional order or merely a pause in an ongoing struggle for influence and security in the Middle East.•The author is an Associate Professor of International Relations and Diplomacy, and an Abshire-Inamori International Fellow at the Center for Strategic and International Studies, a think tank based in Washington DC. Social media platforms @khalid.aljufairi (instagram) and @khalidaljufairi (X)