Ukraine enters the fourth year of all-out war with Russia on Monday, unsure it can rely any longer on its staunchest ally the United States as its exhausted troops fight to hold their ground against unrelenting enemy advances.

In the three years since Russia launched its full-scale invasion, Ukraine has lost swaths of land, managing to regain some thanks to military aid from its Western allies. Millions of Ukrainians have been uprooted with thousands killed or injured.

G7 nations gather to discuss an end to the conflict, French and UK leaders meet Trump and Hollywood hosts the Oscars