A tenuous ceasefire appeared to be holding Saturday after the United States struck two Iranian oil tankers, while the country that hosts the U.S. Navy’s regional headquarters said it arrested dozens of people it alleged were linked to Iran’s Revolutionary Guard . Attacks Friday cast doubt on the tenuous month-old ceasefire that the United States has insisted is still in effect. Washington is awaiting an Iranian response to its latest proposal for a deal to end the war, reopen the Strait of Hormuz and roll back Tehran’s disputed nuclear program. The U.S. military said Friday that its forces had disabled two Iranian tankers that were trying to breach an American blockade of Iran’s ports. Hours earlier, the military said it thwarted attacks on three Navy ships and struck Iranian military facilities in the strait. Meanwhile, in the small Gulf island of Bahrain , the nation's Ministry of Interior said Saturday it had arrested 41 people it alleges are part of a group affiliated with Iran’s Revolutionary Guard.…