food security vs ..security

when we talk about security we automatically think about military security. fine.. but not enough..


what does it mean rising food prices?
what does it mean overexploitation of water resources all over the world ?
how to use water  more efficiently ?
what does it mean food security ?


as it is now happening in Egypt*, food crisis can end up in political crisis therefore global food-security somehow is every nation national-security.


* although... rising food prices in Egypt may be just a pretext an excuse, instrumentally used by those that are addressing the masses