美國官員說，現在關鍵是烏軍兵員不足，而烏克蘭新征的士兵不足以補充烏軍在戰場上傷亡的士兵。（原文）

Ukraine should consider lowering the age of military service for its soldiers to 18 from 25, a senior U.S. administration official said on Wednesday, putting pressure on Kyiv to bolster its fighting forces in the country's war with Russia.

Speaking to reporters, the official said Ukraine was not mobilizing or training enough new soldiers to replace those lost on the battlefield.

"The need right now is manpower," he said.