Armen Martirosian:
I will summarize this in a manner that's more comprehensible and detailed. Armenians became genetically isolated during the Late Bronze Age (about 3500 years before the present) and have not intermixed with populations from distant regions since then. Because Armenians are Late Bronze Age (LBA) genetic isolates, we, as a population are like a living fossil. When comparing the ancient DNA of individuals dug up in modern Armenia with those of Armenians, there isn't much of a difference in the DNA. It essentially means that we represent a genetic continuum of 3500 years.
What this means beyond just Armenians, as the article that will be out in the prestigious journal of Nature soon, is that we can compare modern European populations with modern Armenians, knowing that it's the same as comparing the modern European population with ancient Near Easterners (as Armenians represent an essentially pure sample of the Late Bronze Age). We are closer to the basal populations that existed in the Near East, then subsequently migrated toward Europe during the Bronze Age-Iron Age. than any other population in present Europe.