What Happened The longest war in U.S. history is likely about to get a little longer. On Sept. 7, U.S. President Donald Trump took to Twitter to declare he was calling off a secret summit at Camp David that would have involved meetings with the Taliban and Afghan President Ashraf Ghani to secure a peace deal in Afghanistan. More than that, however, Trump also declared an abrupt end to a year's worth of U.S.-Taliban negotiations — citing continuing violence from the Taliban, including a Sept. 5 attack that killed a U.S. service member and at least 11 others. On Sept. 8, the Taliban released a statement chiding Trump, saying the United States had "seemed content with the progress" after the two sides reached a consensus on a draft peace deal that the lead U.S. negotiator, Zalmay Khalilzad, heralded just last week.