Nice discussion..
So, are any kinetic countermeasures in the works for a/c?? I did a lot of reading on land based systems from this topic.. The Israeli Iron Dome or something capable of intercepting arty fire or medium range rockets/missiles..
You know the Russians had it years ago on that Firefox bird we stole from them.. 
There are very few kinetic countermeasures for tanks:
One is combat proven Rafael Trophy that is operational from 2009 and now is integrated on IDF main battle tanks.
Other systems like "Ratheon - Quick Kill" are still under development (sometime I don't understand US... spends lots of money to develop their own system when alternative system already developed, proven and actively deployed by
very close allies - just not to buy non-US stuff).
And the case of the tank is much easier:
- Anti-tank missiles are much slower than AA/SA
- They much lighter and easier to destroy
- Even partial damage to the missile would do the work as tank has powerful armor.
- The tank is virtually static in comparison to missiles speed.
The only active counter measures against missiles I found:
- IRIS-T has
anti AA/SA capabilities- Python 5 has capabilities against
cruise missiles and standoff-weapons it is not known if it designed with anti-AA/SA missile capabilities.
About Iron Dome - it is absolutely fantastic system (really, I know, without it 2012 would be much harder period) with ~90% kill probability based on real world statistics. It has advantage of having relatively low cost projectiles, according to internet they are ~$50,000 per missile, which is by order of magnitude cheaper than modern AA missile, but... it it seems to be designed mostly against ballistic weapons (rockets, heavy shells etc). It is unknown (at least to the public) how it would behave against maneuverable targets like missiles, also the question does it have an abilities of be fired from the air what and kind of radar support it requires (i.e. the aircraft radar is not as powerful as ground based one).