U.S. intelligence officials have warned that Kabul, Afghanistan's capital and seat of government, could be overthrown by the Islamist militant group in 90 days. This warning could raise questions about President Joe Bidens decision not to quickly withdraw all U.S. troops.U.S. intelligence agencies have warned Kabul could be in the hands of Taliban within the next... [+] 90 days.According to CBS News, Kabul could be under Taliban pressure in 30 days and could fall within 90 days, according to an unnamed U.S intelligence official.Reuters reported that more than two-thirds Afghanistan is under Taliban control as the last U.S.-led international troops prepare to leave Afghanistan at the end of October.Afghan forces are engaged in a pitched fight against the militant group in Kandahar's southern city. There have been several casualties on both sides.According to Wall Street Journal, the rapid advance of the Taliban has come as a surprise to the Biden administration. They didn't expect that the Taliban would take over the first provincial capital before fall. The Taliban now control at least nine provincial capitals.Officials from the United States are concerned that Afghan civilians and soldiers could flee the capital in preparation for a Taliban attack.