Sir Keir Starmer is expected to urge supporting countries to supply Ukraine with more advanced missile systems to target Russian targets during a meeting in the UK capital on Friday.
The prime minister is set to welcome Ukrainian President the Ukrainian head of state alongside what's known as "group of committed partners", consisting of over twenty of supporting nations who have pledged to provide Ukraine protection commitments once fighting stops is arranged.
The Ukrainian leader has been appealing for weeks for additional advanced missile technology from allied countries, a step that Russia has cautions would escalate the war.
President Zelensky is journeying from the EU capital, where he met European representatives on the previous day requesting funding aid.
"The single figure involved in this conflict who refuses to end the war is Vladimir Putin," Sir Keir said.
The Prime Minister will also announce that 100 further air defense systems will be provided to Ukrainian forces ahead of schedule, as specified in a £1.6bn deal reached between the UK and the Ukrainian government in spring.
Zelensky arrives following two diplomatic wins this week: the US President's move to implement further sanctions against the Russian government, and EU nations deciding to support Kyiv's budgetary shortfall.
Britain's leader is aiming to sustain the progress by escalating the influence on Russia to pursue an end to the hostilities.
Sir Keir will press delegates to increase the provision of extended-range systems following a successful operation on an industrial facility in Bryansk, the Russian Federation, using British-supplied advanced weaponry.
"Furthermore, his brutal strikes on innocent children in a nursery recently show that crystal clear," he added.
Several minors were included in no fewer than seven killed in a wave of enemy assaults on Ukrainian territory, which struck a nursery in the major urban center Kharkiv.
The Prime Minister will consult supporting countries on methods to remove Moscow's energy exports from international trade.
The participants will additionally discuss using frozen Russian assets to supply Kyiv with economic assistance, although the initiative experienced a lack of political consensus and legal hurdles at the EU conference on the previous day.
The EU stopped short of consenting an initiative to use up to €140bn in frozen Russian assets to economically support the Ukrainian economy.
However, the participants consented to help support the country's "budgetary necessities" for the coming 24 months.
The US furthermore announced measures on midweek against Russia's two largest oil companies, Rosneft and Lukoil, as component of initiatives to add financial pressure on Russia to commence ceasefire negotiations.
The Russian government began its full-scale invasion of Ukraine in early 2022. It currently holds about one-fifth of Ukraine's soil, comprising the Crimean peninsula the Russian government seized in the year 2014.
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