Obama is a second-term President, so he can hold on till the Tea-Party Republicans blink, they'll have to as he has no real reason to back down, especially on Signature Packages like Obama-care and medicaid. I suspect the cliff will become a reality and the US will hit a double dip as a result.
That said, defence stocks, like Dassault Systems and Lockheed are a good buy at present, both are making major sales to India (German firms have piss-poor results in India), whereas the F-16 is being sold to Taiwan and others due to the retirement of the F-5, while India has bought the Hellfire ATGM and is looking to upgrade its airforce with Dassault Avionics and an expanded fleet of Mirage fighter bombers. The sheer size of the arms race in the India-Pacific Region is incredible, South Korea, Taiwan, Singapore, India, the Philippines and Japan are buying like drunken sailors, as are Saudi Arabia, the UAE, Georgia and Azerbaijan.
Also, take note of the fact that India has no effective Medium Range Missiles capable of reaching Pakistan/Iran, whereas one of their major trading partners, Israel, has and has recently won a competition to supply the Indian Army with the Spike ATGM (recently used in Georgia where it took out Russian owned & operated (not export model) T-64, T-72 and T-80 MBT's). If I could find the symbol of the German Companies who made it, I'd be buying their stocks.
The fact is that Iran has buried its Uranium enrichment facilities in a mountain, where it is going to be effectively immune to anything but nuclear strike, which Israel is both willing and able to do (Jericho 5). Israel has isolated Iran, Georgia and Azerbaijan in the North, Turkey to the West and India to the East, with Hamas hamstrung by apparent statehood (watch what happens if they start firing rockets as an enemy state) and Assad & Gaddaffi out of the picture. Jordan will not fight to save Palestinians or Assad and Egypt is at the brink of civil war.
Defence stocks would be a good buy at present, a real good buy.