Not at all like Lend Lease in WWII:

Not an alliance

The Entente, unlike the Triple Alliance and the Franco-Russian Alliance, was not an alliance of mutual defense and so Britain was free to make its own foreign policy decisions in 1914. As British Foreign Office Official Eyre Crowe minuted, "The fundamental fact, of course, is that the Entente is not an alliance. For purposes of ultimate emergencies, it may be found to have no substance at all. For the Entente is nothing more than a frame of mind, a view of general policy which is shared by the governments of two countries, but which may be, or become, so vague as to lose all content".

The entente in operation

The coming into being of the entente did not necessarily fix a permanent division into two opposing power blocs. The situation remained flexible.[21] The alignment of the Russian Empire with Europe's two largest power centres was controversial on both sides. Many Russian conservatives distrusted the secular French and recalled British past diplomatic manoeuvres to block Russian influence in the Near East. In turn, prominent French and British journalists, academics, and parliamentarians found the reactionary tsarist regime distasteful. Mistrust persisted even during wartime, with British and French politicians expressing relief when Tsar Nicholas II abdicated and was replaced by the Russian Provisional Government after the February Revolution in 1917. An offer of political asylum for the Romanovs was even withdrawn by the British king for fear of popular reaction.[22] Also, France never brought up the subject of asylum with the deposed tsar.