Yes.
Did the wacky leftist cardinal twist his arm behind his back and force him to kiss a Koran?
That incident was before Kasper was put in the Ecumenism slot.
We think that JPII put Kasper in the Ecumeno-slot to get Kasper out of Germany, where Kasper was systematically destroying the Catholic Church.
The Bible says it plainly
The Old Covenant is still operative for the Jews. The New INCLUDES the Old but does not abrogate it--unless you believe that the 10 Commandments were abrogated. Please provide a citation demonstrating otherwise.
They worship a false god, not Jehovah
As a matter of fact, the Muslims worship Yahweh, and they are heretics because they refuse to recognize the Trinity, which was alluded to in the OT and explicitly mentioned in the NT.
This is why they do not recognize the Perfect Sacrifice (if Christ is not the Son of God...) and why they have such, ahhh, difficulties with the area of 'interpersonal law,'--essentially a failure to recognize that each person is a Son of God.
All the rest of their doctrinal aberratios can be explained in this light.
Belloc is a fairly decent source on the matter.