The sudden announcement of a U.S.-brokered ceasefire followed four days of steady escalation between India and Pakistan and mixed signals from Washington.

India and Pakistan agreed to an immediate ceasefire on Saturday, unexpectedly halting the worst fighting in decades between the nuclear-armed neighbors, just when their tit-for-tat strikes appeared to be spiraling out of control.

India and Pakistan agreed to a truce on Saturday, after hours of US-led negotiations ending the most severe military conflict between the nuclear-armed rivals in decades. However, hours later, they accused one another of breaking the agreement.