to grapple with

from The Collaborative International Dictionary of English v.0.48

Grapple \Grap"ple\, v. i.
   To use a grapple; to contend in close fight; to attach one's
   self as if by a grapple, as in wrestling; to close; to seize
   one another.
   [1913 Webster]

   {To grapple with}, to enter into contest with, resolutely and
      courageously.
      [1913 Webster]

            And in my standard bear the arms of York,
            To grapple with the house of Lancaster. --Shak.
      [1913 Webster]