"National Security Advisor Jake Sullivan spoke by phone today with Poland’s National Security Bureau Chief Paweł Soloch," Emily Horne, a spokeswoman for the US National Security Council, said in a statement on Wednesday.
"Mr Sullivan underscored our strong bilateral cooperation on defense issues and welcomed ongoing efforts to strengthen NATO’s deterrence posture," she added.
The statement, posted on the White House's website, also said that Sullivan "conveyed strong support for Poland in the face of the Lukashenka regime’s actions that created a migration crisis on Poland’s border with Belarus."
Sullivan and Poland's Soloch "also exchanged views on Russian military activities near Ukraine and committed to continued close consultation," according to the statement.
Earlier this month, the United States called on Russia to use its influence over Belarus "to cease its callous exploitation and coercion of vulnerable people" amid a migrant crisis on the Polish-Belarusian border.
The European Union has agreed to step up sanctions against Belarus, which it says is pushing migrants toward the bloc in revenge for earlier sanctions over a crackdown on protests last year against strongman leader Alexander Lukashenko's contested re-election, the Reuters news agency has reported.
US State Secretary Antony Blinken in mid-November reaffirmed America's support for Poland amid the migrant crisis on the EU member's border with Belarus.
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Source: IAR, PAP, whitehouse.gov, Reuters