Brussels, 23/06/2011 (Agence Europe) - One of the most sensitive issues - the future of the Schengen freedom of movement area - will dominate Friday's discussions among EU heads of state or government when they debate migration. Review of the governance of the Schengen area and the safeguard clause which allows internal border controls to be reinstated as a last resort, both of which have been agreed in principle since the last meetings of home affairs ministers, are likely to provoke...