dvx:

Magnifico:

However, are you suggesting that if the Bush administration when through with their assassination plan in Germany, Germany would have seen it as an act of war?

No I'm not, merely that they would be within historical precedent if the chose to do so.

I would argue that since the murder of Franz Ferdinand was done by a terrorist organisation with headquarters in the other country, not by a state agency, it is a bad example.

A better example might be the alledged assassination attempt on Bush senior, which was part of the massive list of reasons for the Iraq war:

Joint Resolution to Authorize the Use of United States Armed Forces Against Iraq

Whereas the current Iraqi regime has demonstrated its continuing hostility toward, and willingness to attack, the United States, including by attempting in 1993 to assassinate former President Bush and by firing on many thousands of occasions on United States and Coalition Armed Forces engaged in enforcing the resolutions of the United Nations Security Council;

Or the sinking of US ships used as motivating the US entry into WW1:

Woodrow Wilson Urges Congress to Declare War on Germany - Wikisource

Property can be paid for; the lives of peaceful and innocent people cannot be. The present German submarine warfare against commerce is a warfare against mankind.

It is a war against all nations. American ships have been sunk, American lives taken, in ways which it has stirred us very deeply to learn of, but the ships and people of other neutral and friendly nations have been sunk and overwhelmed in the waters in the same way.