Of Nagorno Karabakh. Armenian separatist Officials Say almost 300 people have been admitted to hospitals, with dozens in a critical condition. The blast, the cause of which is not known, came as thousands of Ethnic Armenians flee the contested enclave after it was seized by azerbaijan last week. Armenia says more than 13,000 people, 19,000. Or about 15 of the territorys population, have crossed the border, fearing persecution and Ethnic Cleansing. Envoys from armenia and azerbaijan are in brussels for eu backed talks. Its the first such meeting between the countries since azerbaijan seized the enclave. Nagorno karabakh is at the heart of one of the worlds longest running territorial and ethnic conflicts. Its recognised internationally as part of azerbaijan, but has been controlled by Ethnic Armenians for three decades. The head of the us agency for International Development said the us would provide 11. 5 million in humanitarian assistance and called for the International Community to