Senate backs Montenegro's NATO membership
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The Senate voted overwhelmingly on Tuesday to back Montenegro joining NATO, sending the treaty to President Trump's desk.
Lawmakers from both parties stressed that the move will help push back against a resurgent Russia, which is opposed to NATO expanding its membership in Eastern Europe.
“Montenegro’s membership also sends an important signal that NATO’s door remains open to aspiring countries in the face of Russian aggression and interference," Sen. Chris MurphyChristopher (Chris) Scott MurphyOnly four Dem senators have endorsed 2020 candidates More than 30 Senate Dems ask Trump to reconsider Central American aid cuts Long-shot goal of nixing Electoral College picks up steam MORE (D-Conn.) said from the Senate floor ahead of Tuesday's final vote.
But Paul and Lee both argued that allowing Montenegro to join NATO did little to help U.S. national security interests.
"I don't see how the accession of Montenegro, a country with the population smaller than most congressional districts and a military smaller than the police force of the District of Columbia, is beneficial enough that we should share an agreement for collective defense," Lee said on Tuesday.
Under NATO's Article 5, member states agree to defend any NATO country that is threatened by force.
The Senate was expected to approve Montenegro's membership after lawmakers voted overwhelmingly on Monday night to end debate on the treaty.
McCain blasted Paul on the Senate floor at the time, saying that the “senator from Kentucky is now working for Vladimir Putin."

"He has no justification for his objection to having a small nation be part of NATO that is under assault from the Russians," McCain said.