We are Israeli company that would like to find strategic partner in
the US market that will work and represent our interests locally and
collaborate with us to increase the customer base in USA.
Is there specific website/location where we can find such partner?
Any suggestions?

Dear Paris, 

First of all, I recommend that you'll address the American Embassy in
Tel Aviv. Their trade department might be able to give you a lot of
valuable information. Your trade or foreign ministry might also have
information for exporters.

Here are a couple of sites that are very useful in finding trade
partners, one for US partnerships only, the other for all
international connections.

BuyUSA 
<http://www.buyusa.com/page/my_gtn/splash.asp> - The aim of the site
is to increase American foreign trade. It finds US partners (and
suppliers) to international companies.

AliBaba
<http://www.alibaba.com/> - is a huge bulletin board, specialising in
matchmaking between companies

In addition, a list of trade events, fairs and matchmaking forums is
available here:
Export.gov
<http://www.export.gov/makesaleshappen/eventinfo.html> 

This directory might be of help: 
Business.com: Trading Partner
<http://www.business.com/search/rslt_default.asp?r4=t&query=trading+partner> 

I hope this answered your question. Please contact me if you need any
clarification on this answer before you rate it. My search terms have
been:
trade partner (with different wording) ; matchmaking.