COMEX copper remained under pressure in Asian trading on Tuesday, tracking weakness in global equity markets. U.S. stocks ended lower overnight, with the S&P 500 declining 0.5% as investors turned cautious following recent record highs. Asian markets also traded mostly lower, weighed down by surging crude oil prices, inflation concerns, and expectations of higher interest rates. Escalating geopolitical tensions in the Middle East further dampened sentiment after Iran ruled out talks with the U.S. to extend a ceasefire agreement. Reflecting the risk-off mood, copper slipped 0.84% to $6.56 per pound, hovering near a two-week low.