Maksim Chmerkovskiy with “Dancing with the Stars” said he was arrested while trying to flee Ukraine, his native country, but he is now traveling back to the United States after fleeing the war-torn nation. “There’s a lot of fighting everywhere,” Chmerkovskiy said on social media. “Streets are crazy. At one point I got arrested… but all good, promise. That was probably the least traumatizing moment in this whole thing as far as Ukraine is concerned, but for me it was just a reality check … a crazy reality check.” It’s not clear who arrested him or the details of the incident. Chmerkovskiy had been in Ukraine before Russia invaded while trying to film “World of Dance UA,” according to reports. Later, he wrote on Tuesday that it is in a “hotel in Warsaw,” the capital of Poland after fleeing via train. “We’re heading to Warsaw (hopefully). Train to Lviv was …