Inside the Pentagon highlights

Some must-reads from this week's edition of Inside the Pentagon:

1. The estimated cost for the Pentagon's major weapon system acquisition portfolio grew by $177 billion, or more than 10 percent, over the last year, swelling from $1.7 trillion to $1.9 trillion.

Full story: Estimated cost of DOD's big-ticket acquisition portfolio grows by $177B

2. Defense Secretary Jim Mattis hosted a group of defense company executives at the Pentagon on Tuesday and has an additional meeting scheduled for Thursday to discuss the Defense Department's key priorities, including the security of classified information, Inside Defense has learned.

Full story: Mattis meeting with defense company executives to discuss priorities

3. Senior Defense Department officials are calling on industry to better protect their supply chains from cyber threats, but uncertainty surrounding DOD's implementation of stringent network security requirements has companies wondering how the department will enforce compliance moving forward.

Full story: Contractors wonder how DOD will enforce supply chain security rules