MOSCOW (Reuters) – Two regions in eastern Ukraine where government and separatist forces have been fighting since 2014 were hit by more than 1,400 explosions on Friday, monitors for the Organization for Security and Cooperation in Europe (OSCE) said, pointing to a surge in shelling. The two Russian-backed, self-proclaimed republics in Ukraine’s Donetsk and Luhansk regions are at the centre of a surge in tensions between Moscow and the West over a vast Russian military buildup near Ukraine. The OSCE’s Special Monitoring Mission that is deployed in the conflict zone said it had logged 553 explos…