Asian share markets declined on Monday while Brent crude futures rose 1.1 percent to $81.43 a barrel and U.S. crude rose 2.7 percent to $78.70 a barrel following Iran's announcement of a renewed closure of the Strait of Hormuz. Ship transits through the strait fell from 32 on Friday to 26 on Saturday. Vice President JD Vance participated in Iran-U.S. talks under an extended ceasefire that reached a second day amid reported threats and mediator exchanges.