BEIRUT (AP) — Syrian opposition activists are reporting heavy clashes between government forces and insurgents east of Damascus, and at least a dozen airstrikes. The Britain-based Syrian Observatory for Human Rights and Syria-based activist Mazen al-Shami said Monday's fighting was concentrated inside a military installation near the suburb of Harasta, where a government force has been trapped for a day. The Observatory said the Syrian air force conducted at least a dozen airstrikes on Harasta and nearby suburbs.