All coverage
China Is Learning From Putin's War in Ukraine, NATO Chief Warns
By Natalia Drozdiak & Isabel Reynolds
NATO chief: Putin win in Ukraine would send 'dangerous' signal to China
By John Haltiwanger
NATO chief wants more 'friends' as Russia, China move closer
By Haruka Nuga & Mari Yamaguchi
NATO, Japan pledge to strengthen ties in face of 'historic' security threat
By Sakura Murakami & Kentaro Sugiyama