Meanings of elaborate when in English

Clegg may elaborate when he gives a speech on this later today.

Putuo police declined to elaborate when contacted by Reuters.

She declined to elaborate when reached by email.

Morrow did not elaborate when contacted by Reuters.

He declined to elaborate when contacted by Reuters.

But the aide declined to elaborate when asked by Reuters whether the Speaker had pushed back against the two-month extension.

Dow did not elaborate when asked what led to the new estimate, although anemic housing and employment markets have hampered the U.S. economy.

Chief Executive Leung Chun-ying said the government was paying close attention to the issue, but refused to elaborate when queried repeatedly at a news conference.

He did not explain why the bank did not wish to access the earlier database and the bank declined to elaborate when contacted by Reuters.

I perfectly understand the necessity of being (over)- elaborate when trying to hold a reader's attention, but was it really necessary to go so far?

This belief is further elaborated when he speaks of the transniigration of souls.

There, such a proposition would be definitely framed at the Treasury, and its details would be elaborated when first presented.