Former US Marine and UN weapons inspector Scott Ritter has warned that President Zelensky’s idea to have Poland shoot down Russian missiles would directly involve NATO in the conflict with Russia.

The Ukrainian leader has been asking his Western partners for a “defense shield” for months.

He has now claimed to have finally received a commitment from Warsaw as part of a security pact. Poland said it would not target Russian missiles without approval from NATO, which the US-led bloc has yet to give.

RT reports: “Zelensky is operating on the assumption that NATO can have Patriot missiles in Poland that can shoot down Russian missiles that are headed towards militarily sensitive targets in the vicinity of Lviv,” Ritter told YouTube host Danny Haiphong in an interview posted on Tuesday.

“He doesn’t understand: that’s an act of war,” Ritter added. “That’s Russian military equipment, on a Russian military mission, in support of a Russian national security objective.”

Shooting down those missiles, even locking on to them with radar, would make NATO “literally a party to the conflict,” Ritter explained. 

The US-led bloc has been trying to maintain a pretense that it’s not directly involved in the Russia-Ukraine conflict, despite donating billions of dollars worth of weapons, equipment and ammunition to Kiev’s armed forces and in some cases literally paying the salary of Ukrainian government employees.

Kiev is trying to have NATO set up a de facto “no fly zone” over western Ukraine, Ritter argued, which he described as “something Russia simply won’t tolerate.”

“Zelensky is just desperate right now, so he’s trying to invent rules of engagement,” Ritter concluded.

Ukrainian forces have been suffering steady setbacks along the front for weeks, with no prospect of replenishing their losses in either men or materiel. 

The first handful of F-16 fighters reportedly arrived on Wednesday and will most likely be armed with modern US missiles. Zelensky has already complained that he would need more than 100 jets to actually make a difference, however. 

Ritter is a former US Marine Corps major who served as a UN weapons inspector. He famously disagreed with the foreign policy establishment in Washington in the early 2000s, insisting that Saddam Hussein’s Iraq did not have weapons of mass destruction – a pretext the US later used to invade the country. He has been a RT contributor and saw his passport seized by the US government when he tried to attend the St. Petersburg International Security Forum in June.