Putin has stated that Western air bases hosting F-16 fighter jets would be "legitimate" targets, but he also mentioned that F-16s "won't change the situation on the battlefield."
This stance indicates a potential escalation of the conflict, as noted by a Swedish defense official. F-16s are capable of carrying nuclear weapons, which Putin emphasized should be considered in combat operations planning.
Ukraine is anticipating the delivery of F-16s from allies to bolster its defense against Russia's invasion.
The country has argued for the need for fighter jets to effectively counter Russian forces and has been training its pilots on them in allied countries for months.
Western air bases may be utilized by Ukraine for the F-16s once they are acquired, as they require high-standard runways and protective hangars.
However, the number of air bases in Ukraine that meet these standards is uncertain, and Russia is likely to prioritize destroying any that do.
During his visit, Putin also dismissed Western warnings of potential Russian attacks elsewhere in Europe, stating that such claims are "sheer nonsense."
He highlighted the vast difference in defense budgets between the US and Russia, questioning the notion of Russia waging war against NATO.
Despite Russia's superior air force, Ukraine has been able to defend its airspace using air defense systems and has shot down numerous Russian aircraft.
However, Ukraine is now facing a shortage of air defense munitions, especially with further aid from the US being blocked by House Republicans.
NATO members have pledged F-16s for Ukraine, with plans kept confidential. Lithuania's defense minister suggested that the first F-16s could arrive in June.
The situation remains tense, with concerns that further escalation could lead to a broader conflict involving NATO countries.