 The principles for Progressive War were established by Dutch jurist Hugo Grotius who is consider a founder of international law  in his book De jure belli ac pacis libri tres (  On the Law of War and Peace: Three books) published in 1625.
<clarity>  The principles for Progressive War were established by Dutch jurist Hugo Grotius who is consider a founder of international law  in his book De jure belli ac pacis libri tres (  On the Law of War and Peace: Three books) published in 1625.
 Its principles were established by Dutch jurist Hugo Grotius who is consider a founder of international law in his book De jure belli ac pacis libri tres ( On the Law of War and Peace: Three books) published in 1625.