BAGHDAD—The main Sunni partner in Iraq's Shiite-led coalition government ended an almost eight-week boycott of cabinet meetings, dialing down tensions in a crisis that erupted hours after the departure of the last U.S. soldier in December.

The decision by the Iraqiya political faction on Tuesday followed its move last week to suspend a boycott of parliament, and comes after pressure and lobbying by U.S. diplomats in Baghdad and senior officials in Washington, including Vice President Joe Biden.

Read the complete story(Some news sites require registration)