BUDAPEST (Reuters) - One of Hungary‘s three main railway unions went on strike at midnight on Sunday, halting some trains and causing lengthy delays. "It‘s a partial strike," said VDSZSZ President Istvan Gasko. "Railway bosses are brutally trying to break the strike everywhere." The Hungarian news agency MTI reported that traffic had nearly stopped, or been seriously delayed, around the eastern Hungarian cities of Debrecen, Miskolc and Zahony. About 60 percent of the trains around the southern rail hub of Pecs were running. Some Intercity routes were interrupted and the union said it would not cooperate in running international trains. The strike, involving about 15,000 of the country‘s 56,000 rail workers, will continue for an indefinite period, union representatives said. Wage talks were due to begin again at 10 a.m. (0900 GMT) between state-owned rail company MAV and union leaders.