Moscow, April 13 (Sputnik/UNI) Global oil prices jumped 8% after US President Donald Trump announced a blockade of the Strait of Hormuz, with Brent crude exceeding $102 per barrel, according to trading data.As of 22:01 GMT Sunday (3:31 AM IST on Monday), June Brent crude futures were trading up 7.76% from the previous close at $102.59 per barrel, while May WTI futures were up 8.2% at $104.51.On Saturday, Iran and the US began talks in Islamabad after Trump announced an agreement with Tehran on a two-week ceasefire on Wednesday night. On Sunday morning, the head of the US delegation, Vice President J.D. Vance, announced that Iran and the US had failed to reach an agreement during protracted negotiations and that the US delegation would retur...