Israel spies on Lebanon all the time with UAVS, satellites and various other means although this piece of junk is not one of the items it uses. Spying on enemies and even on friends is not anti peace its just gathering intelligence which may or may not have some use in future. Killing Hizbollah or palestinian terrorists are enemies and targeted killing is a very effective way of dealing with terrorists and even the US is now adopting the targeted killing strategy in Afghanistan. It also has stops other potential threats arising. In the 60s Israel killed Egyptian scientists who were working on Nassers missile program, killed an Iranian nuclear scientist .. its cheaper and easier to prevent a threat by killing 1 man ... if its a tactic thats proven to work why change it?
UN to hold off on separate Afghan bombing probe for now (Reuters)