As Russian President Vladimir Putin rages about what he calls the largest drone attack on his nation, a military expert says it is unlikely Ukraine was behind the attack.
Russia said eight drones targeted Moscow, Russia's largest city with a population of more than 21 million, in the early hours of Tuesday (local time).
However, all the drones were either shot down or diverted with special electronic jammers.
Moscow Mayor Sergei Sobyanin said two people were injured in the attacks — one was hospitalised.
No deaths were reported.
A Ukrainian presidential aide denied Kyiv was directly involved in the Moscow attack, but said Ukraine was enjoying watching events and forecast more to come.
Despite Russian claims related to this incident, John Spencer, a retired US Army officer and chair of urban warfare studies at the modern war Institute, told RN News Breakfast the claims made by Mr Putin may be an example of a false flag or part of a strategy employed by the Kremlin.
Mr Spencer said the particular drones used in this attack could not have been launched all the way from Ukraine.
"Even the long-range drones Ukraine has most likely sent were different," he said.
"There's enough vagueness or what we call a grey zone in this that Kyiv can fully say, 'I don't know who did that'."
Mr Spencer said the drone attack could have been perpetrated by Russians against the war but there was also a possibility Ukraine got the drones into Moscow.
'Apples and oranges'
The Moscow incident, despite Mr Putin's bluster, could not have been more different that recent attacks on Kyiv, Mr Spencer said.
Ukrainian defence forces said they shot down most of the drones launched at Kyiv during a fresh wave of Russian air attacks on Kyiv early on Tuesday as Russia hit the Ukrainian capital during daylight hours in what was a change of tactics.
At least one person was killed, and four others were injured when their apartment building was hit and caught fire.
Mr Spencer said the two attacks were like "apples and oranges".
"Russia has sent calibre missiles, Shahed drones, bombs, everything in 17 days just this month towards key towards hospitals and schools and nurseries," he said.
"It's straight terrorism, war crimes and they're not in court. They don't deny they're doing it on purpose to try to terrorise.
"Russia is doing it because it cannot have battlefield success.
"They're losing, so they continue with this bombing campaign they have been doing for months."
A false flag?
While Ukraine has been subjected to regular strikes from above throughout the war, it is new for Russia to be hit.
Increasingly, questions are being asked as to whether this attack and an incident above the Kremlin last month might have been false flag incidents staged by the Kremlin.
A false flag is when the actual source of an attack is disguised with intent of pinning it on someone else, so in this example, it would be Russia staging an attack on its own soil.
These are claims the Kremlin denies but when it comes to this and the alleged incident over the Kremlin, Mr Spencer says they are poor examples.
"A true false flag you don't know who did it," he said.
"The drone strike against the Kremlin, it was amateur hour."
However, Mr Spencer also pointed out while the drone strikes in Moscow did little physical damage, psychologically they may have done their job.
The areas hit in Moscow were affluent and Russian news does not carry negative news of the war, such as the number of Russian troops killed in Ukraine or that they have suffered losses to military hardware, so an attack, or even a perceived one could theoretically drum up support for the war in Ukraine.
"These are these are affluent neighbourhoods of Moscow that have been, you can say hit, or just have had to wake up and see something above them that's not Russian," he said.
"Putin has done a great job. He's an autocrat, you can withhold information from the Russian people, you can't withhold explosions.
"It is a sign that this war is going on. It's a psychological impact."
Has Ukraine claimed responsibility for any strikes?
Ukraine has not officially confirmed involvement in any attacks on Russian soil, however, has claimed responsibility for attacks on Russian-annexed region Crimea, which is part of Ukraine.
Ukraine's top military chief claimed responsibility for a series of strikes on Russian air bases including one that caused devastation at the Saky military facility in September last year.
It also repeatedly threatened to strike the Kerch Bridge between Russia and Crimea last year, before that bridge was destroyed in an apparent truck attack in October.
Ukraine did not claim responsibility for the bombing, but Ukrainian officials had repeatedly threatened to strike the bridge in the past.
Although Ukraine has not taken responsibility for attacks on Russian soil, such as Tuesday's, officials often celebrate them.
