"As a citizen, I am profoundly disturbed by the recent vote by Britain's 
 new University and College Union to advance a boycott against Israeli academic 
 institutions. As a university professor and president, I find this idea 
 utterly antithetical to the fundamental values of the academy, where we will 
 not hold intellectual exchange hostage to the political disagreements of the 
 moment.  In seeking to quarantine Israeli universities and scholars this vote 
 threatens every university committed to fostering scholarly and cultural 
 exchanges that lead to enlightenment, empathy, and a much-needed international 
 marketplace of ideas. 
   

    "At Columbia I am proud to say that we embrace Israeli scholars and 
 universities that the UCU is now all too eager to isolate -- as we embrace 
 scholars from many countries regardless of divergent views on their 
 government's policies. Therefore, if the British UCU is intent on pursuing its 
 deeply misguided policy, then it should add Columbia to its boycott list, for 
 we do not intend to draw distinctions between our mission and that of the 
 universities you are seeking to punish.  Boycott us, then, for we gladly stand 
 together with our many colleagues in British, American and Israeli 
 universities against such intellectually shoddy and politically biased 
 attempts to hijack the central mission of higher education."
And here's Drew Faust's (with apologies for the formatting;
not sure what's going on there):

Earlier this summer the University and College Union (UCU), an
organization of British academics, proposed a boycott of Israeli
universities and academics, a proposal to be voted on by their
membership in the coming months. On my second day as President, July 2,
I wrote directly to Sally Hunt, the First General Secretary (president)
of the UCU, stating my strong opposition to this measure. I expressed
my conviction that such a move subverts the academic values and
freedoms necessary to the free flow of ideas that are the lifeblood of
universities and, ultimately, that of the societies and world we serve.
To be clear, my own view is that academics should be promoting, not
undermining, the fullest possible collaboration with Israeli
universities as well as other universities in the Middle East and
elsewhere.