This crossword No. 15813 clues and answers were published on Tue 12 Jan 2021 and the puzzle can be visited by following The Guardian Quick Crossword No. 15813 link.
All Across Clues and Answers:
1-across – Post-1947 tension between the Soviet Union and the United States and their allies : COLDWAR
8-across – Not in anyone’s possession : UNOWNED
9-across – Infection of the nervous system from germs in open wounds — eat nuts : TETANUS
10-across – Capital of Georgia : TBILISI
11-across – Relating to sound : SONIC
13-across – Swing back and forth : OSCILLATE
15-across – Winner’s trophy : GOLDMEDAL
18-across – Irritating : ITCHY
21-across – Munster : STERNUM
22-across – Clear : UNBLOCK
23-across – Dilettante : AMATEUR
24-across – Bizarre : SURREAL
All Down Clues and Answers:
1-down – Makes a reference : CITES
2-down – Admit : LETIN
3-down – RAF equivalent to a British army lieutenant colonel : WINGCOMMANDER
4-down – Pastoral : RUSTIC
5-down – Person seeking to go up in the world : SOCIALCLIMBER
6-down – Heart condition : ANGINA
7-down – Recommendation : ADVICE
12-down – Spiced stew of various meats and vegetables : OLIO
14-down – Piffle : TOSH
15-down – One cannot stop talking : GASBAG
16-down – Room for manoeuvre : LEEWAY
17-down – Takes exception : DEMURS
19-down – Duplicate : CLONE
20-down – Bumpkin : YOKEL
This crossword has in total 26 where 12 are across and 14 are down.