Spanish PM's party gains on anti-war stance, support for far right stalls in polls

MADRID, April 6 (Reuters) - Spain's ruling Socialist Party has gained voter support amid Prime Minister Pedro Sanchez's staunch opposition to the U.S.-Israeli war on Iran, while far-right Vox, which supports the offensive, has seen a decline, two surveys published on Monday showed.Sanchez has emerged as one of the most vocal Western leaders criticising what he calls an illegal and reckless war, closing Spanish airspace to U.S. planes involved in the strikes and banning them from using jointly op