The Madrid summit paved the way for Finland and Sweden to join and underscored that Russia is NATO’s chief security threat. But the alliance’s new defensive efforts aren’t likely to change Putin’s st…

The CDC and other U.S. agencies are working to stop the spread of a new coronavirus that originated in China. But public health resources could become stretched if the outbreak worsens.

Russia has demanded security guarantees that U.S. and NATO officials cannot accept, but there could still be room for building a sustainable dialogue on European security.

President Putin’s deployment of troops in two separatist Ukrainian regions has nearly shut the door on diplomacy and intensified a showdown over European security.

Far too little is known about how the January 6, 2021, attack on the U.S. Capitol happened. A bipartisan investigation should address this, to dispel falsehoods and to help prevent such an assault fr…