now, najibullah has returnedo his home country at a critical moment. president trump hacommitted to end america's longest war, and has even been negotiating a peace deal with the taliban. but the siation on the ground remains violent and unpredictable. >> the driver is telling me, the day before yesterday, there was three explosions. they put an ied, and mainly for the government vehicles. >> arrator: najibullah is heading into a taliban stronghold neathe city of ghazni, less than 100 miles from the capitol, kabul. >> this is ghazni town. it's under control of the government, but they control just the government compound. last night was fighting, from behind these shops.ba the talin, they were attacking on the government. it's mean they are everywhere. narrator: he's had to make a complicated plan to get into the taliban-controlled territory. >> must go witthe drivers from the same area, because the car is known for the taliban this is the car they suggested to be there. (horn nks) this was the last checkpoint we just crossed. from here onrd, the talib

. >> narrator: with exclusive access to the taliban, its fighters, and isis, correspondent najibullah theon situation he ground. a special report, next time on frontline. >> frontline is ma possible by contributions to your pbs station from viewersike you. thank you. and by the corporation for publicroadcasting. major support is provided by the john d. and catherine t. macarthur foundation, committedo to building just, verdant and peaceful world. and by the fd foundation: working with visionaries on the frontlines of social change worldwide. additional support is provided committed to excelintion, journalism. the park foundation, dedicated to heightening publicn aws of critical issues. the john and helen glessner family trust. supporting trustworthy journalism that inform inspires. the heising-simons foundation:ck ung knowledge, opportunity, and possibilities. and by the frontline journalism fund, with major support from jon and jo ann hagler. and additional support from laura debonis and scott nath. captioned by media access group at wgbh access.wgbh.org for more on this and other "f