REUTERS, London

Oil prices rose nearly 3 percent on Tuesday, extending the previous session’s gains, as ‌efforts to end the US-Iran war appeared to have stalled, with the crucial Strait of Hormuz waterway still mainly shut, starving markets of key Middle East energy supply.

Brent crude futures for June climbed $2.99, or 2.76 percent, to $111.22 a barrel by 0758 GMT, after ​gaining 2.8 percent to close the previous session at its highest since April 7. The contract is ​up for a seventh straight day.

At their intra-day peak on Tuesday, Brent was up 3.4 percent on the day at $111.86 a barrel.

US West Texas Intermediate (WTI) crude for June rose $2.54, or 2.64 percent, ​to $98.91 a barrel, after gaining 2.1 percent in the previous session.

US President Donald Trump is unhappy with the latest Iranian ​proposal to end the war, a US official said on Monday, as Iranian sources disclosed that it avoided addressing the nuclear program until hostilities cease and Gulf shipping disputes are resolved.

Trump’s displeasure with the offer leaves the conflict deadlocked, with Iran shutting shipping flows ​through the Strait of Hormuz, a conduit for about 20 percent of global oil and gas supplies, and the ​US retaining its blockade of Iranian ports.