Thailand has imposed martial law in eight border provinces following two days of deadly clashes with Cambodia that have killed at least 16 Thais and displaced over 138,000 people. Fighting involving tanks, artillery, and airstrikes has erupted, with both sides blaming each other. Cambodia reported civilian casualties as well. Thailand has expressed readiness for talks, but no response has come from Phnom Penh. The UN Security Council has called an emergency meeting amid fears of escalation and economic fallout in the tourism-dependent region.