Bulgaria’s Head of State Rumen Radev greeted US President Donald Trump on occasion of the National Day of the United States of America- Independence Day. The strategic partnership between Bulgaria and the USA is a solid basis for increasingly active dynamics in bilateral relations. This upsurge is a natural continuation of the long-standing friendship between the two countries based on shared values and cooperation in a number of areas of mutual interest, the greeting of President Radev reads. The letter also emphasizes energy diversification cooperation, partnership in defense and security field and other topics of mutual interest.