美国批准向乌克兰出售M109自行火炮的维修、修理和大修服务，价值1.5亿美元。

Core Points - The U.S. has approved the sale of maintenance, repair, and overhaul services for M109 self-propelled howitzers to Ukraine, valued at $150 million [1] Group 1 - The total value of the approved services is $150 million [1]