"Your support for the sovereignty and territorial integrity of Ukraine, as well as your efforts to increase energy diversification, advance our shared goal of enhancing European and regional security," said the US president.
The message, which was received a few days before Lithuania's Independence Day, commends Lithuania for increased defense funding.
"Lithuania is a valued NATO Ally that leads by example through your commitment to our shared defense, as evidenced by increasing your defense spending to achieve NATO's agreed benchmark," said Trump.
The new US president has repeatedly and strongly criticized NATO Allies in Europe for under-fundingtheir defence sectors. Lithuania considerably raised its defence budget after the Russian annexation of the Ukrainian Crimea region. Lithuania's government intends to reach the 2 percent of the gross domestic product (GDP), which is required by NATO, in 2018.
In his letter, Trump also applauded Lithuania's support in Afghanistan and efforts against the Islamic State group.
"Lithuania's contribution to joint efforts in Afghanistan and to countering ISIS further demonstrate its commitment to advancing global security," said Trump.
Some 21 Lithuanian troops serve in the NATO-led operation in Afghanistan, in addition to six Lithuanian military instructors serving in an operation in Iraq.
"I am very happy that we received the congratulatory message from the president and that it yet again restated our and US commitments to NATO partners, as well as the fact that Lithuania is dubbed a partner and that it commends our contribution to security and efforts against terrorism in Afghanistan," Lithuania's President Dalia Grybauskaitė told Kaunas journalists.
On February 16, Lithuania will mark 99-year anniversary of restored independence.
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