Turkey disapproves of US sanctions on Iran, President Recep Tayyip Erdogan said Tuesday, as it throws the world out of balance.
China denounced new US sanctions targeting Iran's oil and financial sectors as "long-arm jurisdiction" on Monday and vowed to continue its bilateral trade with the Islamic republic.
Oil prices fell on Monday as US sanctions against Iran's fuel exports were softened by waivers allowing major buyers to import Iranian crude for a while, while Tehran said it would defy Washington and continue to sell.
The top commander of Iran's Revolutionary Guards, Major General Mohammad Ali Jafari, said on Sunday Iran would resist and defeat a US "psychological war" and sanctions against its vital oil sector.
Iran has started production of the locally-designed Kowsar fighter plane for use in its air force, state television reported, as tensions mount with the United States after the reimposition of US sanctions on Tehran.
US Secretary of State Mike Pompeo has said it may take "a handful more weeks" before Washington has enough evidence to impose sanctions on individuals responsible for the killing of Saudi journalist Jamal Khashoggi.
Oil rose on Friday, clawing back some territory after prices fell by the most in a month in the previous session, as the focus returned to supply concerns ahead of a November deadline for US sanctions on Iranian crude.
Vladimir Putin said he hoped Washington would realise that its policy of imposing sanctions on Moscow for its perceived misbehaviour was misguided.
US sanctions are having a strong effect on Iran's economy and popular opinion, though regime change there is not part of Washington's policy, President Donald Trump's national security adviser said on Wednesday.
A senior Iranian cleric warned Washington on Wednesday that if it attacked Iran, the United States and allied Israel would be targeted, as a war of words escalated after the reimposition of the US sanctions on Iran.