Hence the limits of last year's bilateral agreement with Pakistan to co-operate against crime and security threats were exposed by several weeks of recent border tensions.
On August 1st, he signed an agreement to co-operate against terror at the ASEAN Regional Forum, a South-East Asian security grouping.But fighting terror in South-East Asia, as everywhere, is a complicated task.
Old security problems have improved a bit, especially since Myanmar and India began co-operating against rebels from each side who were seeking sanctuary on the other.
It may be that a deal has been struck whereby Guzmán co-operates against Los Zetas – who are his real adversaries – with the authorities, who are not, in return for a laissez-faire approach to his cartel.
As America's ambassador in Islamabad, Cameron Munter, puts it, "If you grow vipers in your backyard, you're going to get bitten .At moments Pakistan sounds ready to co-operate with America against extremists.
Mr Kasuri seemed to suggest, India's foreign ministry spokesman charged, "that Pakistan will co-operate with India against the scourge of cross-border terrorism and terrorist violence only if such so-called disputes are resolved".Progress and frustrationPakistan claimed Mr Kasuri had been misinterpreted.
"While Israel and Hungary are co-operating in fighting against anti-Semitism, such awards might cause a negative impression and lead us in the wrong direction," he said.
Noor Uthman Mohammed, who helped run a camp where 9/11 hijackers trained, received a sentence of 34 months on condition that he co-operate with prosecutions against other detainees.
Once foreign combat troops leave Afghanistan at the end of 2014, there are fears of reprisals against Afghans who have co-operated with international forces against the Taliban over the past decade.
If the claims are true, this will complicate matters for the coalition against IS as Western powers are co-operating with Syrian Kurds against the jihadists, says the BBC's Mark Lowen in Istanbul.
Turkey's armed forces are free to pursue the PKK into the slab of northern Iraq that America and its allies have reserved for Iraqi Kurds: one of the Iraqi factions even co-operates with the Turks against the PKK in return for help against its local rivals.
