A small Sunni Arab bloc ended its parliamentary boycott Saturday, returning to the legislature. The return of the Iraqi Front for National Dialogue ends the last boycott of parliament, which had contributed to the political paralysis at a critical time as the U.S. pushes for reconciliation, the Associated Press reported. Elsewhere, the U.S. military said it had brought a new weapon into the fight in Iraq, announcing the Army's first-ever use of a drone aircraft to kill enemy fighters in Iraq. The Hunter unmanned aerial vehicle, or UAV, dropped a precision bomb on two suspected insurgents believed to be preparing to plant roadside bombs on Sept. 1, the military said. The drone was called in for the attack near Qarraya, 290 kilometers (180 miles) northwest of Baghdad, after a scout team from the 2nd Battalion, 25th Aviation Regiment, observed the insurgents at work. «This accomplishment adds a precise and discriminate means for our Army to successfully engage the enemy in counterinsurgency warfare,» Col. A.T. Ball, commander of the 25th Combat Aviation Brigade, said in a statement. In violence Saturday, a bomb went off midday at a crowded market in the Shiite holy city of Kufa, 160 kilometers (100 miles) south of Baghdad, killing four and injuring five, said Khalil al-Yasiri, a health official in the neighboring city of Najaf.