ACROSS
1 - The capital, on reflection, was rather green (6) - WARSAW {WAR}{SAW}<-
5 - It is felt Father has left and Bishop left halfway (8) - PALPABLE {PA{L}PA}{B}{LEft}
9 - Seasonal accommodation will collapse (4,4) - FALL FLAT {FALL} {FLAT}
10 - Number on the pointer is not so wide (6) - NARROW {N}{ARROW}
11 - After march, possibly Israel will weaken (10) - DEMORALISE {DEMO}{RALISE*}
12 - Grass for raising an animal (4) - REED <-
16 - When by noon it gets so hot, a prayer is the answer (6) - NOVENA {N}{OVEN}{A}
17 - Locate replacement, having love for a cat (6) - OCELOT {LOC(-a+o)ATE*}
19 - Show record drop (8) - DISCLOSE {DISC}{LOSE}
21 - Thought to be almost perfect (4) - IDEA IDEAl
22 - There are torn pieces with every material (10) - TATTERSALL {TATTERS}{ALL}
25 - It is fashionable on both sides of Virginia, but to no avail (2,4) - IN VAIN {IN} {VA}{IN}
26 - Provokes the skinhead which is not necessary (8) - NEEDLESS {NEEDLES}{S}
27 - Hymn able to make one laugh, reportedly (8) - CANTICLE {CAN}{TICLE}(~tickle)
28 - Perennial plant will light up the scene (6) - YARROW {YAR<-}{ROW}
DOWN
2 - Like saying “get the Russian to agree in time” (5) - ADAGE {A{DA}GE}
3 - There could be some fireworks when one starts singing about love, very obviously (5) - SALVO {S}{A}{L}{V}{O}
5 - Nationalist gets three to enter on-cue (7) - PATRIOT {PA{TRIO}T}
6 - Light flyer over most of the country (7) - LANTERN {LANd}{TERN}
7 - If you want to avert rail transport, this could be an alternative (3,6) - AIR TRAVEL*&lit
8 - One is at this when not occupied (5,4) - LOOSE ENDS [CD]
14 - Put the staff on aid distribution in the country (9) - MACEDONIA {MACE}{DONIA*}
15 - Distinguish and relate to a role (4,5) - TELL APART {TELL} {A}{PART}
18 - Huge bird one can manipulate (7) - TITANIC {TIT}{AN(I)C*}
19 - Pitching one in the middle of a river would help ease tensions (7) - DETENTE {DE{TENT}E}
20 - View the venue on line (7) - SCENERY {SCENE}{RY}
23 - Heliacal rise around the end of April (5) - SOLAR {SO{L}AR}
24 - Rope in the girl with love (5) - LASSO {LASS}{O}