1. Both weighed heavily on him, he acknowledged in an interview two weeks before his departure in 2013.

2. He acknowledged that the Russia investigation was one of the things he considered.

3. This is the first time it has acknowledged that it has been contacted in the investigation.

4. He acknowledged that troops are almost in full control of the area.

5. He acknowledged that now I have that responsibility and I will carry it proudly.

6. He has also previously both acknowledged and denied being involved with death squads.

7. Apple acknowledged this as true and said a fix would be coming.

8. The company has acknowledged it needs to improve its approach to security.

9. Abbott also acknowledged it was possible that no debris from the plane would ever be found.

10. It was the first time the militant group publicly acknowledged it has drones in its arsenal.

11. The agency acknowledged that it had found a cache of rockets in one school.

12. Twitter executives have acknowledged their struggle to convince people the service is essential.

13. Facebook has acknowledged that its service has tens of millions of fake accounts.

14. Some even acknowledged he could be his own worst enemy.

15. Facebook itself acknowledged that this happened last year and apologized.