“The Pentagon said it has stepped up raids against Islamic State in Syria, conducting nearly a dozen risky helicopter and ground operations to kill or capture top militant operatives. In December, the military said it had conducted at least 10 operations and raids, according to officials at U.S. Central Command, responsible for U.S. military operations in most of the Middle East. That included three operations Tuesday with the Syrian Democratic Forces, the U.S.’s ally in Syria, that led to the detention of six Islamic State operatives, a spokesman for the command said. Those raids netted what the military said was an Islamic State provincial senior official named al-Zubaydi. Eight other raids, including seven earlier this month and another one in early October, killed or nabbed other Islamic State operatives, military officials said. U.S. officials acknowledged that Central Command has carried out additional raids in Syria, but command officials declined to provide details on any of the other raids. Ground raids and other operations keep Islamic State on its heels, officials said. But it isn’t without risk. In one recent raid, for example, U.S. forces were on the ground for about three hours as they engaged in extensive gunfire and ultimately detained individuals and collected intelligence at the site. Each operation is planned carefully and takes into account the perils of such raids after making assessments on “reams and reams” of intelligence, Col. Joe Buccino, a spokesman for Central Command, said.”