After Iran downed an expensive American drone in international airspace; Trump should wait patiently for that right moment in time. He should choose the two most important Iranian nuclear sites, and drop 2 or 3 MOAB bombs squarely in the center of each site.
No boots on the ground, no tanks, no equipment; only 2 or three massive explosions, that level the nuclear sites with the ground. Leave a message behind at each site: this serves as a warning against any further attempts to advance your nuclear program and threaten our friends such as Israel.