Army's intelligence head dismissed over allegations of spying on gov't officials negotiating with Farc rebels.
Human rights activists fear impunity for war crimes under new law.
Downplayed their impact on efforts to deepen ties with Brazil and Colombia.
Talks poised to resume this week after announcement of new housing construction in disputed turf.
U.S. secretary of state's push to deepen relations comes as local furor has erupted over American spying.
Leading FARC negotiator hopeful but warns that President Juan Manuel Santos should not put personal ambition ahead of deal.
Former Colombian president at odds with Santos administration; faces legal scrutiny over death squads.
But the resumption of kidnapping by the Marxist rebel insurgency to fund its operations could sap the effort of momentum.
Latest round of negotiations adjourns with no substantive progress on decades-long conflict with Marxist insurgents.
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