Why did the FARC not give Chavez the Ingrid Betancourt proof of life?

One big news breaking is that the Colombian Army captured a few urban guerrilla FARC and found in their possession videos and letters from Ingrid Betancourt dated late October! How come the FARC did not give them to Chavez for his visit with Sarkozy? Obviously Chavez knew these evidences existed and was waiting for them. Must we think that the FARC did not want give them to him? Why, oh why? Was the FARC blackmailing more than Colombia?

At least, if Chavez has an ounce of diplomacy left he could use that to mend up things with Uribe accusing the FARC of trying to cause trouble between them by withholding these essential documents. My guess is that Chavez will not.

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