Australia's anti-trust regulator blocked a A$15bn ($11bn) merger between TPG Telecom and Vodafone's Australian joint venture on competition grounds on Wednesday, knocking shares in the firms involved.
Britain's competition regulator on Thursday blocked Sainsbury's proposed £7.3bn ($9.4bn) takeover of Walmart owned Asda — a huge blow to the supermarket groups who wanted to combine to overtake market leader Tesco.
Qatar Petroleum (QP) has won exploration rights in five offshore blocks in the North Argentina, and Malvinas West basins in Argentina.
Qatar Petroleum has entered into an agreement with Eni to acquire a 30% participating interest in the Tarfaya Shallow Exploration Permit, a series of 12 neighbouring offshore blocks along the Atlantic coast of Morocco.
Iraq on Monday invited foreign companies to bid for contracts to explore and develop oil and natural gas reserves in nine new blocks as the OPEC nation seeks to boost its output capacity.