China

Fire of Liberty

Here's a good Op/Ed by Daniel Blumenthal and Thomas Donnelly of AEI on Europe ending its arm embargo on China. It's a good read on how the sell of these weapons will allow the PLA to jump forward in its modernization. When China gets their hands on NATO grade weaponry, they can exacerbate the situation in Taiwan. Even worse, the Chinese military could be upgraded by leaps and bounds thus allowing them to directly challenge the US presence in the area. Both of these could create a situation that the US doesn't need at the moment.

If you want to get a hand on the situation I suggest you read this.