The Russian Defense Ministry said on Sunday that Ukrainian forces had fired at least three drones at Moscow, the latest in a wave of attacks in Russia demonstrating that few places are off limits after more than 17 months of war.

One drone was destroyed in Odintsovo, outside Moscow, the Defense Ministry said, adding that two others struck commercial buildings in the capital after being intercepted by Russian air defenses. There were no injuries, Moscow’s mayor, Sergey Sobyanin, said in a post on Telegram.

Ukraine typically maintains a policy of strategic ambiguity about attacks in Russia that could be attributed to it, seeking to maintain secrecy and the element of surprise. But a few hours after the attack, a Ukrainian Air Force spokesman released a statement.

“They got what they wanted,” the spokesman, Yuri Ihnat, said Sunday morning on national television. “There is always something flying in Russia, including Moscow. Those who are not affected by the war, are now affected, which creates certain moods. Russia can no longer claim it shot down everything.”

Ukraine has also been accused of using drones to attack oil facilities and military air bases deep inside Russia.

The attacks in Moscow, though they have become more frequent, have so far caused no deaths. They have also been far less extensive than the drone and missile strikes that Russian forces conduct nightly across Ukraine, often hitting civilian targets.

The first drone attacks on Moscow, on the Kremlin compound, came in early May, an assault that American officials said was most likely carried out by one of Kyiv’s special military or intelligence units. They were followed by attacks at the end of that month in a high-end Moscow neighborhood.

In July, there have been at least three drone attacks on Moscow, some coming within blocks of striking military facilities central to the war effort.

The attacks have upended the assumption of people in Moscow, about 500 miles from Ukraine, that the fighting would never touch them. And they have prompted criticism about President Vladimir V. Putin’s management of the war, which has taken an enormous economic toll on Russia and has cost thousands of soldiers their lives.

But Kyiv shows no sign of backing down. Ukraine’s president, Volodymyr Zelensky, has promised “retaliation” after two weeks of nonstop Russian bombardment on Odesa, a city on the Black Sea that is both vital to Ukraine’s economy and of great cultural and historical significance. And in a new sign of how Ukraine is expanding its campaign, it has claimed responsibility for a series of bold attacks last year, and appears to have recently fired missiles into Russia for the first time since the start of the war.

These attacks come while Ukraine is intensifying its efforts in the south as part of its counteroffensive, using newly trained soldiers and new weapons — provided by the United States and Europe — to push past Russian soldiers who have spent months building a well-fortified defense. The campaign, which has been slow, has also included more consistent drone and missile strikes in Crimea, which is crucial to Russia’s war efforts and which it illegally annexed in 2014, to try to destroy weapons, ammunition and fuel supplies.