- the intercept of a US spy plane near Russia’s Kamchatka Peninsula on April 21
- an earlier intercept over the Baltic Sea, on or about April 18
- the buzzing of the USS Donald Cook, also in the Baltic, on April 12
Earlier in the year, a coalition of Iranian Islamic Revolutionary Guards Corps (IRGC) troops, Hizballah fighters, and Iraqi Shi’ite militias fought side by side with the Syrian military to break the battle lines of the anti-Assad rebels who have held northern Syria for years. IS took full advantage of this situation and launched its own offensive, capturing large amounts of territory as its fighters pushed west from their strongholds and north toward the Turkish border. Kurdish People’s Protection Units (YPG) fighters to the west also launched an offensive against the struggling anti-Assad rebels, and a small group of those rebels are now trapped.The rebels in the area east of Azaz had been making gains against IS in early April, but by the middle of the month that progress had now been reversed. While it’s dangerous to ever take the word of jihadist propaganda as truth, the presence of the A-10 in this area would suggest that the United States is providing close air support for the anti-Assad rebels as they push back against IS — a level of coordination between the United States and local ground forces typically reserved for Iraq or eastern Syria.If the United States is conducting air strikes against IS, and in support of anti-Assad rebels, it may be an attempt to protect the Turkish border and reassure a frustrated NATO ally. However, IS is still making gains. On April 27, there were reports that IS had captured five rebel-held villages, including Dudyan, west of Al-Rai and right on the Turkish border. IS is now close to closing off and destroying the anti-Assad rebels who are defending their most important border crossing — and the only one they still control in northern Aleppo.