KIEV, Ukraine — OVER the past two weeks, residents of Kiev have lived through its bloodiest conflict since the Second World War, watched their reviled president flee and a new, provisional team take charge, seen Russian troops take control of part of the country, and heard Russia’s president, Vladimir V. Putin, assert his right to take further military action. Yet the Ukrainian capital is calm.

Revolutions often falter on Day 2, as Ukraine has already bitterly learned twice — once after the 1991 collapse of the Soviet Union and then again in 2005 after the Orange Revolution. That could happen again, but the new revolution is enjoying a prolonged honeymoon, thanks to Mr. Putin, whose intervention in Ukrainian foreign and trade policy provoked the uprising in the first place, and whose invasion has, paradoxically, increased its chance of long-term success.

Kiev smells like a smoky summer camp, from the bonfires burning to keep the demonstrators still out on Independence Square warm, but every day it is tidier. Sidewalks in the city center are checkerboarded with neat piles of bricks that had been dug up to serve as missiles and are now being put back.

The police, despised for their corruption and repression, are returning to work. Their squad cars often sport Ukrainian flags and many have a “self-defense” activist from the protests with them. A Western ambassador told me that the activists were there to protect the cops from angry citizens. My uncle, who lives here, said they were also there to stop the police from slipping back into their old ways and demanding bribes.