A Kuwaiti oil refinery came under Iranian drone attack early Friday and sirens in Israel warned of incoming fire, while explosions boomed over Tehran from Israeli strikes as the country marked the Persian New Year. The war that has rocked the global economy neared the end of its third week with Iran showing no signs of letting up on its attacks on the Gulf region's energy infrastructure. Kuwait said two waves of drone strikes at its Mina Al-Ahmadi oil refinery sparked a fire and crews were working to control the blaze, the AP reports. The refinery, which can process some 730,000 barrels of oil per day, was already damaged Thursday in another Iranian attack. It is one of three oil refineries in the tiny, oil-rich nation.