The UK Prime Minister is expected to urge allies to supply Ukrainian forces with more long-range missiles to target Russian targets during a meeting in the UK capital on the upcoming Friday.
The prime minister plans to receive President Zelensky alongside what's known as "alliance of supportive nations", comprising more than 20 of supporting nations who have pledged to offer Ukraine defense assurances once a ceasefire is negotiated.
Ukraine's president has been appealing for an extended period for more long-range weapons from allied countries, an action that Moscow has stated would intensify the conflict.
President Zelensky is travelling from Belgium, where he held talks with European representatives on Thursday requesting financial support.
"The sole individual engaged in the ongoing war who refuses to end the war is the Russian leader," Sir Keir remarked.
The Prime Minister furthermore announce that 100 further air defence missiles will be supplied to Ukraine ahead of schedule, as detailed in a substantial financial arrangement concluded between the UK and Ukraine in spring.
Zelensky comes after significant diplomatic successes this week: Donald Trump's decision to finally apply additional restrictions against Moscow, and European countries agreeing to support Ukraine's financial gap.
Britain's leader is seeking to continue the progress by escalating the leverage on the Kremlin to pursue an end to the war.
Sir Keir will press leaders to expand the delivery of advanced missile technology following an effective attack on a manufacturing site in Bryansk, Russia, using UK-provided Storm Shadow missiles.
"And his depraved strikes on innocent children in a daycare recently demonstrate that perfectly obvious," he added.
Two children were among a minimum of seven lost in a wave of Moscow's attacks on the country, which hit a nursery in the important metropolitan area Kharkiv.
The Prime Minister will discuss with partner nations on methods to take Moscow's energy exports off the global market.
The participants will furthermore discuss utilizing blocked Russian resources to supply Ukraine with monetary support, although the initiative encountered divided opinions and regulatory obstacles at the European meeting on yesterday.
The EU opted against agreeing an initiative to utilize approximately €140 billion in blocked Moscow funds to financially prop up the Ukrainian economy.
However, the delegates agreed to assist with the country's "budgetary necessities" for the next two years.
The US furthermore disclosed sanctions on midweek against Russia's biggest energy corporations, the state-owned company and Lukoil, as component of initiatives to add monetary leverage on Russia to enter peace talks.
The Russian government launched its comprehensive attack of Ukrainian territory in winter 2022. Russian troops presently occupies about one-fifth of Ukraine's soil, comprising the southern Crimea peninsular Russia took control of in the year 2014.