WASHINGTON The US State Department Tuesday branded as ironic an anti-terrorism summit held last week in Tehran. We consider it quite ironic that Iran, the most active state sponsor of terrorism, is holding a meeting on terrorism, said State Department spokeswoman Victoria Nuland. Delegates from 60 countries took part in the June 25 conference, including Iran, Afghanistan and Pakistan, which on Saturday announced that they would work together in the anti-terrorism fight. Irans financial, material and logistical support for terrorist and militant groups throughout the Middle East and Central Asia flies in the face of efforts to promote peace, threatens economic stability, and undermines the growth of democracy throughout the region, Nuland said. So instead of engaging constructively in the region, with the international community, the Iranian government continues to engage unhelpfully and in an unfounded way, she added.