Probably in several ways, but the most obvious is that the United States has not tried to overturn the government of Afghanistan. The ostensible effort in that country has been to attack terrorist groups that may or may not be based in Afghanistan, not the state. In Iraq and Libya, other conflicts the United States either instigated or participated in, the effort was to overturn and replace the actual government of those nations. Even in our somewhat limited involvement in the Syrian civil war, the stated objective has been to overthrow the dictatorship of the Assad government.