Over the span of 24 hours, US President Donald Trump shifted from warning Iran of “annihilation” to backing a 14-day ceasefire, saying Tehran had presented a “workable” plan. The truce is expected to help pause the nearly six-week-long conflict. The sudden change came as intermediaries, led by Pakistan, intensified efforts to prevent further escalation. China, Iran’s largest trading partner, also played a quiet role in pushing for a ceasefire, according to officials familiar with the discussions.