The former officials, who are members of the Alphen Group, an informal network that aims to bolster NATO and European security, made their appeal in an open letter to Democratic and Republican leaders of the US Senate and the House of Representatives, the Reuters news agency reported.
"Ukraine’s fight is not only in defense of its own sovereignty and territory, but also on behalf of the West, its values and way of life, which Russia seeks to replace with an international system more welcoming for dictatorships," the Alphen Group said in its open letter on Monday.
"Russian President Vladimir Putin has no apparent intention to reverse Russia’s aggression or to seek a negotiated settlement on any terms other than complete victory," it added.
The letter warned that the West "must help Ukraine prevent Russia from winning a victory that would both be disastrous for the people and country of Ukraine and threatening the future security of the United States and its allies."
The Alphen Group also said in its letter that the war in Ukraine "is at a tipping point at which decisions made by the United States and its NATO allies and partners will determine whether the outcome is favorable to their interests or disastrous for Ukraine and the West."
Senate Republicans earlier this month blocked an emergency spending bill containing USD 50 billion in new Ukraine aid, Reuters reported.
The White House has said that the US administration's aid for Ukraine's fight against invading Russian forces will run out by the end of this year.
US President Joe Biden has warned that Russia will attack a NATO country if it wins the war in Ukraine.
Russia invaded Ukraine on February 24, 2022, launching the largest military campaign in Europe since World War II.
Tuesday is day 663 of Russia’s war on Ukraine.
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Source: IAR, PAP, Reuters, thealphengroup.com