TBILISI (Reuters) -U.S. House of Representatives Speaker Nancy Pelosi on Sunday strongly condemned what she said were “illegal” border attacks by Azerbaijan on Armenia, using a visit to the Russian ally to pledge American support for its sovereignty. Pelosi cast her trip to Armenia, a sliver of land the size of U.S. state of Maryland that is wedged between Azerbaijan, Georgia, Turkey and Iran, as an attempt to strengthen support for what she cast as a beacon of democracy. Speaking in the ancient city of Yerevan, Pelosi said her trip had significance following the “illegal and deadly attacks by…