have been killed in county donegal in the republic of ireland. hello and welcome. president putin has suffered an embarrassing setback in the war with ukraine, after a huge explosion on the only bridge linking russia with the crimean peninsula. the bridge partially collapsed but has now reopened to light traffic. russia annexed crimea in 2014, and after occupying these regions of ukraine in red it s managed to establish a corridor up through southern and eastern ukraine. the kerch bridge, connecting russia to the crimean peninsula in the black sea, was an important supply route for sending russian troops and artillery into ukraine. in the last few hours president putin has ordered his fsb secret service to tighten security on the peninsula. our russia editor, steve rosenberg, reports. it is the bridge the kremlin built, and it was under attack. an explosion at dawn. this was the result. russian officials claim a lorry had been blown up here and that the fire then spread t