What has changed in how the US views Vladimir Putin following the phone call between Donald Trump and Putin?

According to BBC Russia Editor Steve Rosenberg, Putin has undergone a dramatic transformation in the eyes of the US Administration - shifting "from pariah to potential partner." This represents a significant diplomatic pivot following the Wednesday night phone call between Presidents Trump and Putin. The conversation marked a restart of their relationship and included discussions about Ukraine's future, notably without Ukraine's direct involvement in these negotiations. This change signals a major shift in US-Russia relations and could have substantial implications for ongoing geopolitical tensions and Ukraine's position in future diplomatic arrangements.