Russians are preparing a "surprise" for Ukraine?

According to American media, this is the latest indication that Moscow intends to buy Iranian drones and use them in Ukraine.
"For the past several weeks, Russian officials have been training in Iran as part of the deal to transfer Iranian drones to Russia," an anonymous US official told CNN. CNN has reached out to the Russian Embassy in Washington for comment.

Peskov: "I have no comment"

Kremlin spokesman Dmitry Peskov said in July that Russia had no comment on the drone issue. In fact, CNN already reported last week that a Russian delegation visited an airbase in central Iran at least twice a month to study military drones, according to Jake Sullivan, the US national security adviser.
In June, Iran began showing off its Shahed-129 and Shahed-191 drones to Russia at Kashan Air Base, south of the capital, Tehran. Both models can carry precision-guided missiles. Sullivan said in July that Washington believes Iran will sell Russia hundreds of drones that Moscow will be able to use in the war in Ukraine, writes CNN.
The Ukrainian military uses Turkish-made Bayraktar drones to destroy Russian command posts, tanks and surface-to-air missile systems. Until now, the Russians have used domestically produced Orlan-10 for reconnaissance flights and electronic warfare. CNN, however, writes that the Russians are struggling to replenish their depleted warehouses, which is why US authorities believe they have turned to Iran.
The increasingly strong ties between Iran and Russia are an example of why the US must not abandon the Middle East region, sources told CNN. And Ukraine is trying to bolster its ranks with drone equipment. Kyiv is asking the US for more powerful drones, such as the Gray Eagle drone, but the Pentagon is delaying it for...