Leaked Pentagon documents reveal that the United States has penetrated Russia's security and intelligence services, giving Washington the ability to provide Ukraine with real-time warnings about planned strikes and an assessment of Moscow's war strength. The documents also show a picture of a depleted Russian military struggling in the war against Ukraine, which could potentially influence Russia's decision to continue fighting or seek a negotiated settlement. However, the documents also exposed a critical shortage of air defense munitions in Ukraine, indicating that the country is in dire straits as well. The United States appears to be spying on Ukraine's top military and political leaders to gain a clear view of the country's fighting strategies. While the leak appears to show the extent of the US's intelligence on Russia's planning, it is uncertain if any sources of information will be cut off as a result of the leak. The leaked documents, considered the most complete picture of the inner workings of the largest land war in Europe in decades, is under Pentagon investigation.