London: Ben Wallace, the defence secretary for the UK, suggested on Wednesday that Ukraine could show more "gratitude" to its allies in light of Russia's invasion by saying that Britain is not an Amazon delivery service for weapons to Ukraine.

Wallace cautioned the public, "There is a slight word of caution, which is, whether we like it or not, people want to see gratitude," on the sidelines of a NATO summit in Vilnius, the capital of Lithuania.

"Occasionally, you have to convince nations to give up their own stocks. And yes, the conflict is honourable, and we acknowledge that you are waging it not only for your own freedoms but also for ours.

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Wallace referred to the US Congress as "the Hill in America," and he added, "but sometimes you've got to persuade lawmakers on the Hill in America."

You need to convince sceptic politicians in other nations that their efforts are worthwhile and that they will benefit from them, he continued.

Wallace recalled that last year, after receiving a list of weapons requests from Ukraine, he told Kyiv officials, "I am not Amazon."

British Prime Minister Rishi Sunak responded to a question about Wallace's comments by stating that Volodymyr Zelensky, the president of Ukraine, "has expressed his gratitude for what we have done on a number of occasions."

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Sunak told reporters in Vilnius, "Not least in his incredibly moving address to parliament earlier this year and he has done so again to me, as he has done countless times when I have met him.

So, Sunak continued, "I know that he and his people are very appreciative of our support, our hospitality to many Ukrainian families, as well as the leadership we have displayed throughout this conflict.

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The G7 leaders promised to provide "enduring" military support on Wednesday, the second day of the NATO summit, to assist Ukraine in driving back invading Russian forces.

Zelensky expressed his appreciation for the security guarantees but made no attempt to hide the fact that he preferred NATO to have established a precise timeline for Ukraine's accession to the alliance.