<p>If you are committed to a career in nuclear engineering, your best bet is to spend time reading the websites of the various undergrad and graduate programs. Take note of the admission requirements for the grad programs, and email the departments for more information. Find out if they do admit international students, and where those studentscompleted their undergrad work. I expect that you will find that a good undergrad engineering program from your home country can get you into a graduate program here. If it is a PhD program rather than an MSEng, it will almost certainly include full financial support.</p>