BUCHAREST, Romania (AP) — Romania’s president told U.S. counterpart Joe Biden that more NATO troops are needed on the alliance’s eastern flank given Russia military maneuvers that feel threatening to many people in the region. The appeal by Romania’s President Klaus Iohannis came during a conference Monday of regional leaders which Biden joined by video. The Polish and Romanian leaders hailed Biden’s appearance as a sign of U.S. support for their security. Polish President Andrzej Duda called Biden’s presence by video link “a very important signal.” The presidents represent the so-called Bucharest Nine, a group of the easternmost members of the Western military alliance. Most of them share a concern about Russia’s attempts to reassert its influence over their region.