said defence minister Nikolai Svinarov upon arrival from the 40-th international conference on security policy in Munich. By March 15 all 7 ratifications on the country's accession will be deposited at the US Department of State. Most likely an official ceremony will be held on Bulgaria's accession to the Alliance on April 2, Svinarov stated in a radio interview. Expert examinations on possible US basing in Bulgaria are on, he added.