Biden warns Russia on greater costs if it undermines Ukraine election

U.S. Vice President Joe Biden walks in front of an honor guard at Otopeni international airport near Bucharest May 20, 2014. REUTERS/Bogdan Cristel

BUCHAREST (Reuters) - U.S. Vice President Joe Biden warned Moscow on Wednesday that undermining the May 25 election in Ukraine would bring greater costs for Russia. "(We) have agreed that if Russia undermines these elections on Sunday we must remain resolute in imposing greater costs on Russia and we must be equally resolute to invest in the NATO alliance," Biden told reporters after meeting Romanian President Traian Basescu. Biden arrived in Bucharest on Tuesday as part of Washington's campaign to reassure east European allies of U.S. backing in the West's confrontation with Russia over Ukraine. (Reporting by Luiza Ilie, Writing by Radu Marinas; Editing by Janet Lawrence)