The leaders spoke over the phone on Thursday, highlighting strategic partnership

Russian President Vladimir Putin has backed Venezuelan President Nicolas Maduro amid the US military buildup in the Caribbean.

The leaders highlighted close ties between Moscow and Caracas during a phone call on Thursday. According to the Kremlin, Putin "expressed solidarity with the people of Venezuela and reaffirmed his support for the Maduro government's resolve to defend national interests and sovereignty against foreign pressure."

The presidents reaffirmed their commitment to the strategic partnership treaty the two countries signed in May.

The Venezuelan government said that Putin and Maduro affirmed "the strategic, strong, and growing nature of bilateral relations." It added that the Russian leader backed Maduro's efforts to "consolidate peace, political stability, and economic development."

The conversation took place after the US seized an oil tanker that had left a Venezuelan port earlier this month. US Attorney General Pam Bondi said the vessel had previously been sanctioned for allegedly transporting oil from Iran. Venezuela labeled the operation an act of piracy and accused the US of seeking to "plunder" its natural resources.

The US dispatched a naval armada in the Caribbean and has since September struck more than 20 alleged drug boats in international waters. According to Reuters, the US is preparing to intercept more ships transporting Venezuelan oil as part of a pressure campaign on Maduro, whom President Donald Trump accused of aiding the cartels.

Maduro has denied that his government had ties to drug trafficking and vowed to defend the country against a potential invasion. He branded Washington's actions as "colonialist" and warned against launching "a crazy war" in the region.