China’s foreign minister Wang Yi on Tuesday urged Pakistan to ramp up mediation efforts in the Iran crisis, as the war threatens to overshadow US President Donald Trump’s visit to Beijing. In a call with his Pakistani counterpart Ishaq Dar, Wang lauded Pakistan’s efforts in facilitating negotiations between Washington and Tehran and helping to extend the ceasefire. But he also called for Pakistan to “step up its mediation efforts to contribute to … the opening of the Strait of Hormuz and the...