A senior US Department of Defense official says Russia has fired 710 missiles into Ukraine since the start of the war, CNN writes..

The Russian Federation has fired 710 missiles against Ukraine since the invasion began, according to a senior US Department of Defense official, and Russian troops have closed in on the cities of Kharkiv and Mykolaiv..

Pentagon spokesman John Kirby noted that almost all missiles were fired at eastern Ukraine..

“If you draw a straight line from Kyiv to Odessa, then almost all missile attacks are directed east of this line,” Kirby said..

According to Kirby, the United States did not record missile launches near Ukraine's borders with Poland or in the western part of the country..

Over the past day, Russian troops advanced 20 km and are not far from Kharkov.

Also, the occupying forces are located about 15 km north of Nikolaev, a US Department of Defense official said..

According to him, no significant advance of Russian troops towards Kyiv or Chernigov was recorded, however, intense battles continue near Chernigov..

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Earlier it was reported that Russia is preparing the ground for the use of chemical weapons in Ukraine. And they will most likely " This was stated by White House Press Secretary Jen Psaki.