WASHINGTONThe US military is working around a Pakistani government border blockade by shipping small amounts of some supplies for the Afghan war through alternate countries, US defense officials said Tuesday. The supplies for US troops in Afghanistan are items that would have been sent through Pakistan if the border hadnt been closed in protest over the US bombing on Nov. 26 that killed two dozen Pakistani soldiers, according to two officials who spoke on condition of anonymity because of the sensitivity of the issue. One official said selected items in very small amounts have been shifted to other means of delivery in the last few days. The official declined to be more specific. Other officials said there is no immediate need to alter the flow of war supplies substantially because there is no near-term prospect of shortages. The rerouted supplies, like all that go through Pakistan, are non-lethal items. A Pentagon spokesman, Navy Capt. John Kirby, said the border closing has had no appreciable impact on military operations in Afghanistan and that senior American commanders believe they are well supplied for now. Kirby said the top U.S. commander in Kabul, Marine Gen. John Allen, is comfortable that hes got what he needs right now. About 30 percent of the non-lethal supplies for U.S. and coalition troops in Afghanistan normally come via two routes from Pakistan - the Torkham border crossing in Khyber and at the Chaman gateway near Quetta. Much of what is supplied is fuel. About 40 percent of non-lethal supplies travel on a northern route that enters Afghanistan by rail through Uzbekistan, and about 30 percent are shipped by air. Aware of its vulnerability to unpredictable Pakistani border closings, the US military in recent years has developed alternative supply routes. In particular it has expanded the capacity of the northern route since 2009. With a troop drawdown now under way in Afghanistan, supply requirements are expected to fall, thus also reducing the need to send fuel and other materials by land across Pakistan.