President Trump halted US intelligence sharing with Ukraine and banned the UK from sharing US-sourced intelligence, along with freezing military aid. This decision has revoked the 'Rel UKR' classification and has a significant impact on major British institutions such as GCHQ and the Ministry of Defence. In light of Russia's occupation of a portion of Ukraine's territory, the country is facing a critical weapons shortage within the next two to three months. The ban on intelligence-sharing seriously undermines Ukraine's defensive capabilities, while Western allies are working urgently to address the security vacuum.